The vehicle mounted backward viewing device has a base structure for mounting the viewing device on the vehicle, a rotatable housing and a mirror or camera in the housing. An electric DC motor drives a rotation of the housing relative to the base structure. A control circuit having provides for user control of orientation of the mirror or camera by rotating the housing. The control circuit comprises a pulse width modulation circuit. When the motor driven viewing device is powered on, the housing to be rotated from a folded orientation to an operational orientation by causing the pulse width modulation circuit to supply current from the power supply input to the electric DC motor using a first supply current duty cycle level, of preferably 100%. When the housing is rotated to adjust the orientation, the control circuit causes the pulse width modulation circuit to supply the current using a second supply current duty cycle level, lower than the first supply current duty cycle level.
VEHICLE MOUNTED BACKWARD VIEWING DEVICE
FAHRZEUGMONTIERTE RÜCKBLICKVORRICHTUNG
DISPOSITIF DE VISUALISATION ARRIÈRE MONTÉ SUR VÉHICULE
2023-12-13
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |